S19-Wk4: Data-sheet for NPN and PNP Transistor measurements
Greetings everyone
Defining Transistor:
Transistor is a small semiconductor that regulates the flow of current or voltage and amplify the electric current in a circuit. Transistors have different sizes and numbers indicating their nomenclature and 3 legs which are the base, the emitter and the collector.
NPN and PNP are types of Bipolar Junction Transistors (which is a type of transistor).
NPN transistor means that two of the leg is negative and one is positive.
While PNP means there are two positive legs and one negative. This can be tested using a multimeter. Or with the numbers on the Transistor, the data sheet will show the type of BJT transistor it is.
Task 1
Find the data sheet for the following nomenclatures.
- Irfz24A This is described as Advanced Power MOSFET
- N5551 (ON semiconductor) This is described as General Purpose Amplifier
(Draw the component and identify the legs of each one of them, observe if there is a difference between them, mention it.)
Diagram I
Diagram II
The built differs: the first has a metal above the body.
The symbols for the leg differs
For 2N5551, the legs are E- Emitter, B- Base, C- Collector.
For Irfz24A, the legs are G- Gate, D- Drain, S- Source.
There's also a difference in their symbolic representation as shown beside it on the diagram.
Task 2:
Find the data sheet for the following transistors.
MJE 13003
Screenshot fromPHE 13003C
Screenshot fromTip41
Indicate which among these transistors that can serve as replacements for each other and Why?
MJE13003 and PHE13003C can serve as a replacement for each other.
Because Both NPN transistors has higher power and share similar features compared to TIP41 which has medium power. Which makes them suitable for replacement in a circuit.
High-power transistor = 10A, 300V
High current gain = 1000-2000
Switching speed = 2.5μs
Locate NPN or PNP type transistor at home, identify its legs as explained in the class and perform the 3 measurements. Determine if the transistor is in good condition or not
Transistors used C1815 (NPN transistor) gotten from @ubongufofot
First measurement: Placed my black probe on base. Switched the meter nob to continuity, placed on collector and Emitter which produced sound. This is another way to determine the legs.
Second measurement B-C
Third measurement B-E
Transistor used A1015 (PNP transistor) gotten from @ubongudofot
First reading. In this case, I placed the red probe on base and the black in collector and Emitter.
Second reading B-C
Third reading B-E
All transistors are in good shape as the readings for C and E same measurement.
Using the analog multimeter to test, if it's to test for NPN which has a single P, the black probe will be on base. For PNP which has a single N, the red probe will be on base to get the readings. The transistor act as an amplifier in a circuit
I have assessed your assignment post ,and below captures my assessments:
Task 1: You have presented the datasheets as well as the symbols for the two transistors. Concerning their differences and observations, you should have discuss more in details.
Task 2: You have shared the datasheets
of the 3 outlined transistors on this task. It's interesting to read those differences as you have pointed out.
Quick question: How did you know that the last transistors you tested were good?
Comment/Recommendation
Overall, I think you did much better than all your previous tasks and it's a good one. You made some very good approaches to each of the tasks.
I recommend that you work on your Markdown formatting. Consider adding white space between paragraphs to prevent the text from appearing cramped and to make it easier to read.
I'm glad you came for some electronic components in my shop. Maybe you could make a separate post about that..
Scores| 7/10
Asides using the data sheet, I used the multimeter to check for the continuity of the pinout. When the corresponding probe is on base, there'll be a reading when the other probe test the emitter and Collector. If meter probe is on collector and Emitter there'll be no reading.
Thank you, friend!
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Saludos estudiante @lusciouslucy, la constancia y el querer hacer mejor las cosas te ha llevado a presentar una mejor tarea.
Debes fijarte más en los detalles de los transistores, recuerda que el estudio teórico sirve para saber en qué momento utilizarlos, pero cuando encontramos transistores que pueden servir de reemplazo, no siempre vienen con su patillaje igual al otron.
Te recomiendo repasar la tarea 2 para que veas de lo que te hablo.
No es necesario que menciones a los profesores en tú publicación. Recuerda eso para las próximas tareas.
Thank you the tip I've just read on that. If the pinouts are not compatible it is not a good replacement as it can cause error in connection. But it can be used in some cases. So asides energy compatibility, the pinout is also an important consideration. I'll read more on that.
Noted I apologize for that
Que bueno que revisaste lo que te he mencionado, para poder usarlo solo se debe aplicar la lógica y de esta forma resuleves el problema.
It actually takes a lot of practice to handle test probes the way you are handling it in this pictures, and there is a lot of observable improvement from your previous assignment. Thumbs-up to you.
Thank you sir for all your encouragement and coaching. Your consistency in the tasks is a motivation.